People who have competed at Australian Brazilian jiu-jitsu and grappling events. Australia only, for now. See Australian BJJ rankings for recorded wins by belt, state, and ruleset.
| Shuk Yee Ho | White | Braddah Jiu Jitsu |
| Shyla Tingson | Grey | Martial Art Spirit |
| Si Saulwick | Unknown belt | Chincogan peak martial arts |
| Si Yeol Kim | Blue | Gracie Barra West Ryde |
| Sia Choi | Blue | DOS Taekwondo Eastwood |
| Sia Meyer | Grey | Gracie Barra Burleigh Heads |
| Siahna Oui-Nona | White | Asylum MMA |
| Sian Hong | Unknown belt | Infinity Brazilian Jiu JItsu Australia |
| Sian John | White | Will Machado - Comp Team |
| Siana Da Silva Lay | Grey | SHED 12 Brazilian Jiu Jitsu |
| Siaosi Kaino | Grey | Waves Martial Arts Comp Team |
| Siarna Cupitt | Grey | Galeb BJJ |
| Sibile Germanauskaite | White | TA | BYRON BAY |
| Sid Halabi | Brown | Apex Brazilian Jiu Jitsu |
| Sid Kumar | White | Parramatta Jiu Jitsu Academy |
| Sid McDonald | White | Integrated Combat Centre - Peakhurst |
| Sid Nickyle Lim | Grey | Base Training Centre |
| Sidd Gupta | Grey | Gracie Elite Australia |
| Siddarth Sundararajan | White | DOMINANCE |
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